add udp api

fix idle refcount

little bit improve callback codes

add todo

add comment for UV class

improve source codes

add folding markers

re-orederd function entries

for now, use php_error_docref instead of fprintf debug

add examples

update readme

improve declarations

WIP: uv_tcp_connect

fix typo

add uv_tcp_nodelay

fix shutdown leaks

add uv_loop_refcount api for debug

add uv_default_loop function. uv_run and uv_run_once accepts uv_loop resource

add declarations

add uv_idle_stop api

add idle API

update copyrights

this is not mruby

add fixme

for now, big leak issue were solved. but still there are some leaks.